Central locking device for a plurality of closeable openings in the body of a motor vehicle
First Claim
1. A central locking system arranged in a motor vehicle to lock covers of a plurality of closeable openings in the vehicle, comprising means for selectively generating underpressure or overpressure;
- a plurality of locking devices assigned to respective covers;
a plurality of pneumatic control units each including a chamber having a movable wall and an opposite fixed wall, a control element attached to said movable wall, said element being movable between two control positions and being linked to an assigned locking device, said fixed wall being formed with a space communicating with said chamber via a connection opening, a valve arranged in said space and including a closing member normally closing said connection opening;
means for holding said closing member in its open position when said control element is displaced from one of its control positions;
conduit sections connecting the chamber of a first control unit with said underpressure or overpressure generating means and further connecting the space of a preceding control unit with the chamber of a subsequent control unit to apply underpressure or overpressure into respective chambers whereby said control elements are moved into one of said control positions; and
indicating means coupled to the valve of the last control unit to indicate positions of the control elements which are outside the field of vision of the operator of the motor vehicle.
1 Assignment
0 Petitions
Accused Products
Abstract
A central locking system for use in a motor vehicle includes a pressure source generating preferably an under pressure and an over pressure. The source is connected to a series of pneumatic control units each including a pressure chamber, a control element arranged in the chamber for movement between two control positions, an opening in the chamber communicating with a space enclosing a valve which normally closes the opening and the space being provided with a discharging nipple which is coupled via the subsequent series connected control units to an indicator device. The indicator device is arranged in the field of view of the car operator. In this manner, the operating condition of locking devices which are outside of view of the operator can be reliably checked.
6 Citations
8 Claims
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1. A central locking system arranged in a motor vehicle to lock covers of a plurality of closeable openings in the vehicle, comprising means for selectively generating underpressure or overpressure;
- a plurality of locking devices assigned to respective covers;
a plurality of pneumatic control units each including a chamber having a movable wall and an opposite fixed wall, a control element attached to said movable wall, said element being movable between two control positions and being linked to an assigned locking device, said fixed wall being formed with a space communicating with said chamber via a connection opening, a valve arranged in said space and including a closing member normally closing said connection opening;
means for holding said closing member in its open position when said control element is displaced from one of its control positions;
conduit sections connecting the chamber of a first control unit with said underpressure or overpressure generating means and further connecting the space of a preceding control unit with the chamber of a subsequent control unit to apply underpressure or overpressure into respective chambers whereby said control elements are moved into one of said control positions; and
indicating means coupled to the valve of the last control unit to indicate positions of the control elements which are outside the field of vision of the operator of the motor vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a plurality of locking devices assigned to respective covers;
Specification